摘要
利用61单元自适应光学系统湍流校正过程仿真模型,分析计算了变形镜的交连值、高斯指数与自适应光学系统校正能力的关系.发现当交连值的稳定性变差时,引起校正效果的波动程度与高斯指数有关.高斯指数取1.9～2.1时,波前位相差的校正效果受交连值变化的影响最大,原因是校正算法的前提为各个驱动器的影响函数是线性叠加的.
The relations between crosslinking value, Gaussian index of a deformable mirror and correction capability of an adaptive optical system are analyzed and calculated by using a simulation model for turbulence correction of a 61-element adaptive optical system. It is found that the fluctuation degree of correction effect is related to Gaussian index when the stability of the crosslinking value is getting worse. The influence of crosslinking value on correction effect for wave-front phase error will be the maximum when Gaussian index is within the range of 1.9-2.1. The reason is that the premise of the correction algorithm is linear superposition of influence functions for various actuators.
出处
《光电工程》
EI
CAS
CSCD
北大核心
2004年第5期7-10,共4页
Opto-Electronic Engineering
基金
国家863高技术项目资助
关键词
自适应光学
变形镜
像差校正
数值模拟计算
交连值
高斯指数
Adaptive optics
Deformable mirror
Aberration correction
Numerical simulation
Coupling
Gauss index
